% snd = [rst(1, 0.5), rst(2, 0.5), rst(3, 0.5), rst(4, 0.5), rst(5, 0.5), rst(6, 0.5), rst(7, 0.5)];

% plot(snd);
y = [rst(5, 0.5), rst(5, 0.5), rst(6, 1), rst(5, 1), rst_h(1, 1), rst(7, 1)];
y1 = [rst(5, 0.5), rst(5, 0.5), rst(6, 1), rst(5, 1), rst_h(2, 1), rst_h(1, 1)];
y2 = [rst(5, 0.5), rst(5, 0.5), rst_h(5, 1), rst_h(3, 1), rst_h(1, 1), rst_sta(7, 0.5), rst(6, 0.5)];
y3 = [rst_h(4, 1), rst_h(4, 0.5), rst_h(3, 1), rst_h(1, 1), rst_h(2, 1), rst_h(1, 1)];
ret = [y, y1, y2, y3];
sound(ret);